Material-independent Dimensioning of Knurled Interference Fits of arbitrary Shape

任意形状滚花过盈配合的与材料无关的尺寸标注

• 批准号: 249500173
• 负责人: Professorin Dr.-Ing. Birgit Awiszus
• 金额: --
• 依托单位: Professur Konstruktionslehre
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/249500173?language=en
• 关键词: Material; independent; Dimensioning; Knurled; Interference

Shaft-Hub-Connections are frequently used for the transmission of dynamic forces and torques. In most cases, frictionally engaged or form closed connections are used. The Knurled-Interference-Fit (KIF) represents a combination of friction and form closure. Based on the joining process a friction closure occurs in the axial direction. Additionally, a form closure occurs in the tangential direction, because of the knurled shape which is formed into the relevant complement (hub or shaft). The importance of KIFs continuously increases. But there is a considerably insecurity regarding the dimensioning and the design of KIFs, because there is no general guideline like DIN 7190 for cylindrical press-fits. Therefore, the primary aim of the project is the material-independent dimensioning of KIFs with arbitrary shape. For the first time a validated design-algorithm for the continuous numerical simulation as well as for the (semi)analytical computation of KIFs will be available. For automotive lightweight design concepts the material combination steel/aluminum pressure die casting, with knurled shafts, will be investigated. Furthermore, the material combination steel/steel with knurled hubs, for gear wheel applications, will be analyzed. Based on the knowledge of the things past project in conjunction with the planned material combinations 42CrMo4 / EN AC-46000 and C45 / 16MnCr5 the specific material and the geometry-specific basis, for the desired target is given.The arbitrary shape refers at this point to the variation of the flank pitch, the pitch angle and the position of the knurls. For a reliable static and dynamic design as well as for the validation of the continuous numerical simulation of KIFs gaining of knowledge is necessary. Another aim is the enhancement and the generalization of analytical computation approaches for the joining-force and the torque.Based on the mentioned material and geometry-specific base the prospective commercial usability is ensured by the following strategies:Analytical: Design of KIFs with analytical approachesNumerical: Guideline for the continuous numerical simulation for the material-independent dimensioning of axial joint KIFs, of arbitrary shape

轴毂连接经常用于传递动态力和扭矩。在大多数情况下，使用摩擦接合或形成闭合连接。滚花过盈配合 (KIF) 代表摩擦和形状闭合的组合。根据连接过程，轴向方向上发生摩擦闭合。此外，由于相关互补件（毂或轴）中形成有滚花形状，因此在切线方向上发生形状闭合。 KIF 的重要性不断增加。但 KIF 的尺寸和设计存在相当大的不安全性，因为没有像 DIN 7190 这样的圆柱形压配合通用准则。因此，该项目的主要目标是对任意形状的 KIF 进行与材料无关的尺寸标注。将首次提供用于连续数值模拟以及 KIF 的（半）分析计算的经过验证的设计算法。对于汽车轻量化设计概念，将研究带滚花轴的钢/铝压铸材料组合。此外，还将分析用于齿轮应用的钢/钢与滚花轮毂的材料组合。基于过去项目的知识以及计划的材料组合 42CrMo4 / EN AC-46000 和 C45 / 16MnCr5，给出了所需目标的特定材料和特定几何形状的基础。此时的任意形状是指齿距、螺距角和滚花位置的变化。为了可靠的静态和动态设计以及 KIF 连续数值模拟的验证，获得知识是必要的。另一个目标是增强和推广连接力和扭矩的分析计算方法。基于上述材料和特定几何形状的基础，通过以下策略确保未来的商业可用性：分析：采用分析方法设计 KIF 数值：任意形状的轴向接头 KIF 的与材料无关的尺寸设计的连续数值模拟指南

项目成果

Influence of Hub Parameters on Joining Forces and Torque Transmission Output of Plastically-Joined Shaft-Hub-Connections with a Knurled Contact Surface

轮毂参数对滚花接触面塑性连接轴-轮毂连接的接合力和扭矩传递输出的影响

• DOI: 10.3390/machines6020016
• 发表时间: 2018
• 作者: Leidich;Gerstmann;Awiszus
• 通讯作者: Awiszus